/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.inspur.edp.bff.designtime.generator.core.rtgen.managergenerator.mgrImplclass.methodgenerators;

import com.inspur.edp.bff.api.dataprocessor.IEntityPropertyMapper;
import com.inspur.edp.bff.designtime.generator.core.rtgen.managergenerator.mgrImplclass.FSMgrImplGenContext;
import com.inspur.edp.caf.generator.baseInfo.ParameterInfo;
import com.inspur.edp.caf.generator.baseInfo.TypeInfo;
import com.inspur.edp.caf.generator.method.ClassMethodGenerator;
import java.util.ArrayList;
import java.util.Arrays;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.ReturnStatement;

public class GetRootEntityPropMethodGenerator extends ClassMethodGenerator {

  private FSMgrImplGenContext mgrImplGenContext;

  public GetRootEntityPropMethodGenerator(FSMgrImplGenContext fsMgrImplGenContext) {
    this.mgrImplGenContext = fsMgrImplGenContext;
  }

  @Override
  protected Block buildMethodBody() {
    Block block = ast.newBlock();
    ReturnStatement returnStatement = ast.newReturnStatement();

    String typeName = null;
    if(mgrImplGenContext.getMgrGenContext().getFSGeneratorContext().getRootEntityPropMapperType() != null)
      typeName = mgrImplGenContext.getMgrGenContext().getFSGeneratorContext().getRootEntityPropMapperType().getFullName();
    if (typeName == null || "".equals(typeName)) {
      returnStatement.setExpression(ast.newNullLiteral());
    } else {
      ClassInstanceCreation classInstanceCreation = ast.newClassInstanceCreation();
      classInstanceCreation.setType(ast.newSimpleType(ast.newName(typeName)));
      returnStatement.setExpression(classInstanceCreation);
    }
    block.statements().add(returnStatement);
    return block;
  }

  @Override
  protected boolean getIsOverride() {
    return true;
  }

  @Override
  protected ArrayList<Modifier.ModifierKeyword> getAccessModifiers() {
    return new ArrayList<>(
        Arrays.asList(new Modifier.ModifierKeyword[]{Modifier.ModifierKeyword.PROTECTED_KEYWORD}));
  }

  @Override
  protected String getMethodName() {
    return "getRootEntityPropertyMapper";
  }

  @Override
  protected ArrayList<ParameterInfo> getParameterCollection() {
    return null;
  }

  @Override
  protected TypeInfo getReturnType() {
    return new TypeInfo(IEntityPropertyMapper.class);
  }
}
